The DSP operates in District 11, but you can find examples of sidewalk parking all over town. As seen in District 5 on Ashbury Street:

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NB: When this self-appointed “commissioner” talks of getting an offending vehicle “removed” he means towed away – towed away with extreme prejudice. Anybody who calls in a tow on a sidewalked-parked car on his or her own street should be prepared for possible blowback. (Those who live in or rent out illegal in-law apartments might very well get ratted out by an irate sidewalk parker, just saying.) Anonymity recommended.

What’s stopping somebody from calling 415-553-1200 (dispatch – blocked driveways, sidewalks, etc.) or 311? Nothing, that’s why this parking strategy isn’t sustainable, that’s why drivers generally don’t make a habit of doing this kind of thing. (Personally, it’s not my style to dial, but for some people, it is – see below)

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I would agree that it’s probably no picnic trying to park an 18-foot-long vehicle at night on the Streets of San Francisco, but your ride will eventaully get vandalized, ticketed, towed, whatever, depending on the neighborhood. For example, the evening dog walkers of Specific Whites Pacific Heights all have DPT’s phone numbers preprogrammed into their cellies. They’re simply waiting to see something like this blocking their path.